It's not my forum.Rules are OK, but writing a bible on rules..who is gonna read this? Fine print traps just to have an excuse to ban a member just case he didnt have the time to memorize 25 pages.
And not devaluing, giving a discount in the, I dont know, first year. But it is your forum, do as you want.
Giving a discount is the same as devaluing.
If you can afford to give 10-50% off whatever it is then the original price is already inflated.
Discounts like that work on furniture; no one really buys a sofa at the full retail price, there is and are always sales on. Some sales tactics do not translate well to services or products.